Automatic spring-controlled lift-valve.



A. BECK.

AUTOMATIC SPRING CONTROLLED LIFT VALVE.

APPLICATION FILED SEPT. 30,1907.

921 ,348, Patented May 11, 1909.

ADOLF BECK, OF CANNSTA DT, GERMANY.

AUTOMATIC SPRING-CONTROLLED LIFT-VALVE.

Specification of Letters Patent.

Patented Bay 1 1, p 1909.

Application filed September 80, 1007. Serial No. 808,166.

To all whom it may con/cam:

Be it known that I, Anon BECK, asubject of the King of WiirtembeIrf, and resident of Cannstadt, in the in dom of Wi'lrtemberg, German Empire, have invented a new and useful Automatic Spring- Controlled Lift-Valve, of which the following is a specification.

The present nvention-relates to s ring their inner ends to suitab e axes while the springs themselves lie in a plane at right angles to the plane of the valve. A suitable sto for the valve is provided so as to limit its ift.

The invention is illustrated in the accompanying drawings, in which Flgure 1 is a section andFig. 2 a plan of one convenient form, Fig. 3 1s a section and Fig. 4 a plan .of a modified form showing another arrangement of the sprin s, Fig. 5 is a section and Fig. 6 is a plan 0 a further modification showing a form of valve com osed of several annular parts arranged in different planes.

In carrying the invention into effect according to the form shown the spiral spring a is fixed at its inner end to a cross bolt 0 carried by the hood or the like d which also forms the stop for the lift valve. The outer end of the spiral spring 0 is fixed tothe valve 11. It will be seen that the spiral s ring has a lurality of turns andin this way t 1e action of the spring is exceedingly regular and the spring 1s not too severely strained. Two such sprins as shown are provided one at the left an one at the right hand of the valve b, so that when the valve 6 is raised its osition is always parallel to the seat. The olts c, to which the spiral springs a are fixed, are held in the cover 1 by means of conical nuts 0 and the cover (1 itself is suitably su ported by means of bolts e. Itwill be um erstood that by turning the bolts or rods 0 the tension of the springs may be adjusted. The

rods c turned in this way are then held in their position by means of the nuts 0.

From Figs. 1 and 2 it will be seen that the valve late is tangential to the spiral and when't e valve rises from itsseat it moves toward the inner axis of the spiralin this way the force exerted b the plate on the springs is compressions The flat spiral springs are fixed at various points to the valve so that the valve is sup orted horizontally and no guid' means or the valve are necessary. Accd rd ing to Figs. 3 and 4 the continued tangent leaving the spiral of does not pass through the center of the valve plate but the spirals a are fixed to the plate in the reverse manner. The valve plate I) in this form is still tangential to the flat spiral springs and is illustrated as consisting of a circular valve controlling a number of ports b If desired the valve may be arranged in tiers as shown in Figs. 5 and 6. The cover f is provided and arranged inthree tiers. In each tier there are supported bolts g to which spiral spring; h are fixed. These s iral sprin s are ed in the same way as ilustrate in Fig. 1 to annular valves j and j which control the opening of ports k, k and W. The operation of each of the valves 7', 7" and 1' is just the same as has already been described with reference to Fig. 1.

I claim 1. A lift valve comprising in combination with a valve seat, a valve plate, a plurality of fiat spiral springs of a plurality of turns fixed at their outer ends to said plate and su portin it from a number of points so distri uted t at said valve plate moves parallel to its seat and bolts towhich the inner end of said springs are fixed.

2. A bit valve comprising in combination with a valve seat, a valve plate, a plurality of fiat spiral springs of a plurality of turns fixed at their outer ends to different points around the valve plate, said plate bei tangential to the spirals and disposed so t at when it rises from its seat it approaches, the axes of the flat spirals and bolts .to which said springs are fixed at their outer ends.

3. A lift valve comprising a valve plate, a plurality of fiat spiral springs having several turns, said springs being fixed at their outer' ends to different points around said plate to support the same horizontally and arranged in p anes at right angles to said plate, bolts arranged axial y to said springs and to which said springs are fixed at their inner ends and means for adjusting the tension on said means for ad springs.

.4. A lift valve comprising a valve plate, a plurality of flat spiral springs having several I usting the tension on said spiral spiral springs and a cover carrying said bolts to which the spiral springs are fixed and actmg as a stop to limit the lift of the valve.

In witness whereof I have hereunto set my turns; said springs being fixed at their outer i hand in the presence of two witnesses.

ends to different points around said plate to 1 support the same horizontally and arranged in planes at right angles to saidplate, bolts arranged axially to said springs and ,to which said springs are fixed at their inner ends,

- ADOLF BECK.

Witnesses ERNEST ENTENMANN, CARL Wnz. 

